[LAU] Massive Xruns during recording

Hey hey, when I recorded something today - after a long time - I noticed masive xruns during recording, not during playback. I suspected LinuxSampler with the SFZ engine, but - as far as I could see - it doesn't use much CPU. It's still getting so bad that I get horrible timing issues. I am recording five stereo tracks from LS, while four more tracks are playing back. Below you'll find system/software info. I'd welcome any tip. Kernel: 4.13.12-1-ARCH (64bit) CPU: AMD Athlon(tm) II X4 640 Processor (as listed in /proc/cpuinfo) realTimeConfigQuickScan reports that the system is good, except for no full preemtion enabled in the kernel. LinuxSampler: v2.0.0 jackd: v0.125.0 (-R --timeout 4500 -d alsa -C multi_capture -P multi_playback -r 48000 -p 256 -z shaped) multi_capture and multi_playback are ALSA devices that couple two MAudio Delta 1010LT cards (linked by S/PDIF clocking) Internal hard-drive: apparently SAMSUNG HD154UI (as found via /sys) Best wishes, Jeanette -------- * website: http://juliencoder.de - for summer is a state of sound * SoundCloud: https://soundcloud.com/jeanette_c No one in this world Knows me better than you do So diary I'll confide in you <3 (Britney Spears)