I am with a driver version: 19.4.3 and Phoenix Miner 5.0e Windows/msvc - Release build. When the miner makes a DAG for epoch #340 is ok. But the 4GB card stops when the miner starts to make a DAG for epoch #351.
Try set -rvram -1 on command line or in config, may be this can resolve your issue
I have this in my config...
please show log of startup PhoenixMiner for more information ...
In the begginig everything is ok, but after 8 min and
2020.06.09:11:43:41.083: GPU4 GPU4: Generating ethash light cache for epoch #351
2020.06.09:11:43:41.265: GPU1 GPU1: Starting up... (0)
the card with a monitor crashed:
Ok, I think that issue occurs when nicehash pool switch mining coin from ETH to ETC ...
you may try mine only ETH or ETC selecting different port on the nicehash pool ...