Try this driver. I tested a lot of drivers (adrenaline, blockchain, etc.) - these drivers are the best for my graphics cards. Maybe it will help you.

I also confirm this error

Since I use assembler it will take a lot of time to implement all these changes and I don't have enough time currently. I implemented pow7 but for other forks you should use other miners.

No CN-heavy, no old GPUs, sorry, I just don't have time for it.

v11.3:

- removed devfee, miner is completely free now.
- added "-pow7" option to support Monero hardfork, use "-pow7 1" value to enable it.
- reduced CPU usage for systems with a lot of GPUs.

In a few days.

I uploaded v11.2 for Linux.

I cannot see this bug (don't have it in Windows and don't have access to Linux system currently), but I found possible reason and fixed it. So need someone who sees this bug in Windows and can confirm that it is fixed in latest update. Or I will check it on Linux system directly in a few days.

v12.4:

- slightly improved speed for some cards (1-2%).
- added "-gmap" option.
- a few minor changes/improvements.

Memory leak: just redownload v12.2, see note in OP.
-i 8: done, you can use it already.

To all:
v12 requires even more GPU memory, amd drivers don't like such things. So if miner is unstable or you get bad speeds, increase virtual memory and/or reduce "-i" value, by default it's "6", try "-i 4" or "-i 5".

memory leak if run second miner
v12