Still a problem with iGPU 5700G.

Stats crash the miner. Gotta have the --no-stats option when using the iGPU.

Only happens with the iGPU, not when you use it with other cards.

I do hope you keep working on the code.
But gotta say I will use other miners as the system becomes laggy with AMD cards when you use this miner. You can't use the system for other stuff really when you use your Display device for mining with this one. Other miners allow a responsive system even when mining.
You will be good to use a dedicated setup for mining instead.

Vega 64 performance is subpar.

Same setting I get ~43Mh/s with SBMiner for Vega 64 (OC & tuned) while TBMiner only nets ~36Mh/s with same settings. You need to crank the wattage up considerably to have above 40Mh/s performance on the Vega 64 with TBMiner.
SBMiner uses only ~160W for that 43Mh/s while TBMiner needs 200+ watts or you lose performance considerably if you don't allow it to guzzle power.
SBMiner is much more efficient there in it's implementation.

Your RX 6900XT performance is one of the best though if you don't mind the "laggy" desktop if you use the system.
68Mh/s ~120-128W (software reading) if tuned for low power with xintensity -1 dynamic mode.