I am having this issue also, but not just in record mode, it’s just random. Sounds like my monitors are going to blow and then fades off. My meters also peg out and then stay there for a time after the sound fades. I too am using the 64 bit feature.
I am using windows 10 64.
This morning I started Cubase up and within an hour the noise happened. I then went ahead and shutoff the 64 bit and played around for another hour and no loud sound. Maybe you are onto something with the 64 bit. I will keep using the 32 bit and report back.
I have used cubase now for two days with the 32 bit option and I have had no reoccurrence of the issue. So I think it must be some sort of conflict with 64 bit or maybe some of the plugins dont fully support 64 bit yet,just a guess.
This almost deafened me today mixing on headphones, and has happened several times throughout the day (while I’m trying to work with the levels turned almost all the way down). I’m using 32 bit processing precision in Cubase 9.5.10 (64 bit) with an RME Babyface Pro. This started happening after loading some NI Kontakt instances in VSL Ensemble Pro, but this may coincidental.
Has there been any acknowledgement of this issue and/or solutions to it?