Toshiba. Had one for a couple of years. Two major faults:
1) It’s incredibly slow. The response time from the remote is often longer than a second, and it takes a while to turn on too (have no experience of other boxes, so can’t compare startup times, but seems slow to me)
2) It’s kinda buggy. Randomly, it will output everything in green. Like the old days of computer video when you had the wrong codec, everything coming out of the box is green. Also, it will freeze. Only way to fix both these problems is a hard reset, which then if you’re mid-record, cuts that short.
Basically, not great.
Have you upgraded the software? I have an LG box that I’d given up on, it displayed similar problems to yours. Apparently a lot of problems arose after digital switchover with some PVRs. I managed to find a software update, and now it’s right as rain. It wasn’t automatically updating by the way.