I have it with 13600K, its running great since almost 5 months.

Try to run y-cruncher or prime 95 small ftt , and report back if the cooler can handle it, cinebench is not even that heavy test.

Try to drop it to 1.3V then if worked try lower like 1.29 or 1.28.

Did you try drop the vcore lower? 337W seems way to high for only minimal OC for P cores only