Were does cubase buffer samples?still got problems

hi martin this was another issue connected too the previous request for help…
Massive problems with latest cubase 11 update - Cubase - Steinberg Forums

im sure it is a bug in 11.41 because the issues only became a problem with that update…
ive uninstalled 11.41 and gone back too 11.20 and it seems too be working fine now.
ive just loaded up my previous song which could only play one sample at a time and i can now add loads of audio tracks with no issues (touch wood)
ive made a quick arrangement and did a 5 minute track and got 30 tracks/7 fx channels/15 inserts and ssl bus compressor 2 on my master channel and its all ok.

my audio interface is a uad apollo twin usb…and im on win 10

i think ill stick with 11.20 until i buy 12 when it comes out.
thanks