diff --git a/.SRCINFO b/.SRCINFO
index fd4a2be..d2d5e9e 100644
--- a/.SRCINFO
+++ b/.SRCINFO
@@ -1,6 +1,6 @@
 pkgbase = linux-cachyos
 	pkgdesc = Linux EEVDF-BORE scheduler Kernel by CachyOS with other patches and improvements
-	pkgver = 6.4.0
+	pkgver = 6.4.1
 	pkgrel = 1
 	url = https://github.com/CachyOS/linux-cachyos
 	arch = x86_64
@@ -22,16 +22,16 @@ pkgbase = linux-cachyos
 	makedepends = patch
 	makedepends = python
 	options = !strip
-	source = https://cdn.kernel.org/pub/linux/kernel/v6.x/linux-6.4.tar.xz
+	source = https://cdn.kernel.org/pub/linux/kernel/v6.x/linux-6.4.1.tar.xz
 	source = config
 	source = auto-cpu-optimization.sh
 	source = https://raw.githubusercontent.com/cachyos/kernel-patches/master/6.4/all/0001-cachyos-base-all.patch
 	source = https://raw.githubusercontent.com/cachyos/kernel-patches/master/6.4/sched/0001-EEVDF.patch
 	source = https://raw.githubusercontent.com/cachyos/kernel-patches/master/6.4/sched/0001-bore-eevdf.patch
-	b2sums = b59eb04a8715af9f686978812e6d4a466172bb859f80657076de14cd0828b4fac15b688ff8959f5c65485f7f6bef26590412c66821e720de843cb8666f226c90
+	b2sums = 8551ab8fb2e973855f7fe8cf0ea2f999ae943dc140291849ff89fb9870798347c07b13f9e3fbdd91122ec53d6f52d73f394e432ff0c8290c0298638ba7ccc405
 	b2sums = 133085b75ef7a5234a6090a375134ba7d5970d8e136530d66085f013ea0f9e50c16c475cb74a18bbad9a82f1b43306b4db754ecdaa1c17e5c8acdbf981ccbfb6
 	b2sums = 11d2003b7d71258c4ca71d71c6b388f00fe9a2ddddc0270e304148396dadfd787a6cac1363934f37d0bfb098c7f5851a02ecb770e9663ffe57ff60746d532bd0
-	b2sums = aec8d5a9716fb5139303d6deeae6fe0cc1fef731de9be7da3448859dea0c1fb71c8be74e43d9af48e517fb8bac89209d5ea2fcfc9338196c72524509b0cbb8c0
+	b2sums = f4a301541d03659f767f6f7eee7c2bb67e75bb7528846a656034af4af7c59c6a2864764f23afcc44a8bfc37b44f415591c355e3993b26ade3d6fc95e1cc2bd0f
 	b2sums = 1d9844923224c45dbf1c428592dfa607997284c9421dd6906166caeb37d6cc109cfc445a0f544578ccd77803ec5a616a106eb89cd5f95eba15273a6af72c1680
 	b2sums = ce9cf211bf76c09bbea0f824fbbba37c4dcd19d3679220286e5d03a080b2ef255dccfb5158206985586cb95303b15b3014c4a4b7bde95b1e8b08f38f6e861491
 
diff --git a/PKGBUILD b/PKGBUILD
index b84c181..0fc9646 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -19,6 +19,7 @@ _cachy_config=${_cachy_config-y}
 # 'hardened' - select 'BORE Scheduler hardened' ## kernel with hardened config and hardening patches with the bore scheduler
 # 'cachyos' - select 'EEVDF-BORE Variant Scheduler' EEVDF includes latency nice
 # 'eevdf' - select 'EEVDF Scheduler' EEVDF includes latency nice
+# 'rt' - select CFS, but includes a series of realtime patches
 _cpusched=${_cpusched-cachyos}
 
 ## Apply some suggested sysctl values from the bore developer
@@ -135,14 +136,6 @@ _use_auto_optimization=${_use_auto_optimization-y}
 # disable debug to lower the size of the kernel
 _disable_debug=${_disable_debug-}
 
-### Selecting the ZSTD kernel and modules compression level
-# ATTENTION - one of two predefined values should be selected!
-# 'ultra' - highest compression ratio
-# 'normal' - standard compression ratio
-# WARNING: the ultra settings can sometimes
-# be counterproductive in both size and speed.
-_zstd_level_value=${_zstd_level_value-normal}
-
 # Clang LTO mode, only available with the "llvm" compiler - options are "none", "full" or "thin".
 # ATTENTION - one of three predefined values should be selected!
 # "full: uses 1 thread for Linking, slow and uses more memory, theoretically with the highest performance gains."
@@ -165,6 +158,8 @@ _use_lto_suffix=${_use_lto_suffix-y}
 _use_kcfi=${_use_kcfi-}
 
 # Build the zfs module in to the kernel
+# WARNING: The ZFS module doesn't build with selected RT sched due to licensing issues.
+# If you use ZFS, refrain from building the RT kernel
 _build_zfs=${_build_zfs-}
 
 # Enable bcachefs
@@ -179,12 +174,12 @@ else
     pkgbase=linux-$pkgsuffix
 fi
 _major=6.4
-_minor=0
+_minor=1
 #_minorc=$((_minor+1))
 #_rcver=rc8
 pkgver=${_major}.${_minor}
-#_stable=${_major}.${_minor}
-_stable=${_major}
+_stable=${_major}.${_minor}
+#_stable=${_major}
 #_stablerc=${_major}-${_rcver}
 _srcname=linux-${_stable}
 #_srcname=linux-${_major}
@@ -233,6 +228,9 @@ case "$_cpusched" in
     bore) ## BORE Scheduler
         [ -n "$_tune_bore" ] && source+=("${_patchsource}/misc/0001-bore-tuning-sysctl.patch")
         source+=("${_patchsource}/sched/0001-bore-cachy.patch");;
+    rt) ## CFS with RT patches
+        source+=("${_patchsource}/misc/0001-rt.patch"
+                 linux-cachyos-rt.install);;
     hardened) ## Hardened Patches with BORE Scheduler
         source+=("${_patchsource}/sched/0001-bore-cachy.patch"
                  "${_patchsource}/misc/0001-hardened.patch");;
@@ -309,6 +307,7 @@ prepare() {
         tt)  scripts/config -e TT_SCHED -e TT_ACCOUNTING_STATS;;
         bore|hardened|cachyos) scripts/config -e SCHED_BORE;;
         cfs|eevdf) ;;
+        rt) scripts/config -e PREEMPT_COUNT -e PREEMPTION -d PREEMPT_VOLUNTARY -d PREEMPT -d PREEMPT_NONE -e PREEMPT_RT -e PREEMPT_LAZY -d PREEMPT_DYNAMIC -e HAVE_PREEMPT_LAZY -d PREEMPT_BUILD;;
         *) _die "The value $_cpusched is invalid. Choose the correct one again.";;
     esac
 
@@ -408,16 +407,20 @@ prepare() {
     echo "Selecting '$_tickrate' tick type..."
 
     ### Select preempt type
-    [ -z "$_preempt" ] && _die "The value is empty. Choose the correct one again."
 
-    case "$_preempt" in
-        full) scripts/config -e PREEMPT_BUILD -d PREEMPT_NONE -d PREEMPT_VOLUNTARY -e PREEMPT -e PREEMPT_COUNT -e PREEMPTION -e PREEMPT_DYNAMIC;;
-        voluntary) scripts/config -e PREEMPT_BUILD -d PREEMPT_NONE -e PREEMPT_VOLUNTARY -d PREEMPT -e PREEMPT_COUNT -e PREEMPTION -d PREEMPT_DYNAMIC;;
-        server) scripts/config -e PREEMPT_NONE_BUILD -e PREEMPT_NONE -d PREEMPT_VOLUNTARY -d PREEMPT -d PREEMPTION -d PREEMPT_DYNAMIC;;
-        *) _die "The value '$_preempt' is invalid. Choose the correct one again.";;
-    esac
+    # We should not set up the PREEMPT for RT kernels
+    if [ "$_cpusched" != "rt" ]; then
+        [ -z "$_preempt" ] && _die "The value is empty. Choose the correct one again."
 
-    echo "Selecting '$_preempt' preempt type..."
+        case "$_preempt" in
+            full) scripts/config -e PREEMPT_BUILD -d PREEMPT_NONE -d PREEMPT_VOLUNTARY -e PREEMPT -e PREEMPT_COUNT -e PREEMPTION -e PREEMPT_DYNAMIC;;
+            voluntary) scripts/config -e PREEMPT_BUILD -d PREEMPT_NONE -e PREEMPT_VOLUNTARY -d PREEMPT -e PREEMPT_COUNT -e PREEMPTION -d PREEMPT_DYNAMIC;;
+            server) scripts/config -e PREEMPT_NONE_BUILD -e PREEMPT_NONE -d PREEMPT_VOLUNTARY -d PREEMPT -d PREEMPTION -d PREEMPT_DYNAMIC;;
+            *) _die "The value '$_preempt' is invalid. Choose the correct one again.";;
+        esac
+
+        echo "Selecting '$_preempt' preempt type..."
+    fi
 
     ### Enable O3
     if [ -n "$_cc_harder" ] && [ -z "$_cc_size" ]; then
@@ -572,17 +575,6 @@ prepare() {
             -d LRNG_RUNTIME_FORCE_SEEDING_DISABLE
     fi
 
-    ### Selecting the ZSTD modules and kernel compression level
-    [ -z "$_zstd_level_value" ] && _die "The value is empty. Choose the correct one again."
-
-    case "$_zstd_level_value" in
-        ultra) scripts/config --set-val MODULE_COMPRESS_ZSTD_LEVEL 19 -e MODULE_COMPRESS_ZSTD_ULTRA --set-val MODULE_COMPRESS_ZSTD_LEVEL_ULTRA 22 --set-val ZSTD_COMPRESSION_LEVEL 22;;
-        normal) scripts/config --set-val MODULE_COMPRESS_ZSTD_LEVEL 9 -d MODULE_COMPRESS_ZSTD_ULTRA --set-val ZSTD_COMPRESSION_LEVEL 19;;
-        *) _die "The value '$_zstd_level_value' is invalid. Choose the correct one again.";;
-    esac
-
-    echo "Selecting '$_zstd_level_value' ZSTD modules and kernel compression level..."
-
     ### Disable DEBUG
     if [ -n "$_disable_debug" ]; then
         scripts/config -d DEBUG_INFO \
@@ -701,7 +693,7 @@ _package() {
     echo "$pkgbase" | install -Dm644 /dev/stdin "$modulesdir/pkgbase"
 
     echo "Installing modules..."
-    _make INSTALL_MOD_PATH="$pkgdir/usr" INSTALL_MOD_STRIP=1 \
+    ZSTD_CLEVEL=19 _make INSTALL_MOD_PATH="$pkgdir/usr" INSTALL_MOD_STRIP=1 \
         DEPMOD=/doesnt/exist  modules_install  # Suppress depmod
 
     # remove build and source links
@@ -815,9 +807,9 @@ for _p in "${pkgname[@]}"; do
     }"
 done
 
-b2sums=('b59eb04a8715af9f686978812e6d4a466172bb859f80657076de14cd0828b4fac15b688ff8959f5c65485f7f6bef26590412c66821e720de843cb8666f226c90'
+b2sums=('8551ab8fb2e973855f7fe8cf0ea2f999ae943dc140291849ff89fb9870798347c07b13f9e3fbdd91122ec53d6f52d73f394e432ff0c8290c0298638ba7ccc405'
         '133085b75ef7a5234a6090a375134ba7d5970d8e136530d66085f013ea0f9e50c16c475cb74a18bbad9a82f1b43306b4db754ecdaa1c17e5c8acdbf981ccbfb6'
         '11d2003b7d71258c4ca71d71c6b388f00fe9a2ddddc0270e304148396dadfd787a6cac1363934f37d0bfb098c7f5851a02ecb770e9663ffe57ff60746d532bd0'
-        'aec8d5a9716fb5139303d6deeae6fe0cc1fef731de9be7da3448859dea0c1fb71c8be74e43d9af48e517fb8bac89209d5ea2fcfc9338196c72524509b0cbb8c0'
+        'f4a301541d03659f767f6f7eee7c2bb67e75bb7528846a656034af4af7c59c6a2864764f23afcc44a8bfc37b44f415591c355e3993b26ade3d6fc95e1cc2bd0f'
         '1d9844923224c45dbf1c428592dfa607997284c9421dd6906166caeb37d6cc109cfc445a0f544578ccd77803ec5a616a106eb89cd5f95eba15273a6af72c1680'
         'ce9cf211bf76c09bbea0f824fbbba37c4dcd19d3679220286e5d03a080b2ef255dccfb5158206985586cb95303b15b3014c4a4b7bde95b1e8b08f38f6e861491')
diff --git a/linux-cachyos-rt.install b/linux-cachyos-rt.install
new file mode 100644
index 0000000..5bf59d9
--- /dev/null
+++ b/linux-cachyos-rt.install
@@ -0,0 +1,12 @@
+post_install() {
+    cat << EOF
+You install the linux-cachyos kernel variant with RT patches.
+
+Please make sure that you don't use the ZFS filesystem, as this kernel is not
+compatible with it due to licensing issues.
+EOF
+}
+
+post_upgrade() {
+    post_install
+}