It is possible and normal that the recorded video with CFR settings at 60fps is saved at 59.94fps.
The playback issue might happen if you have recorded with H264(AMD APP) on Bandicam 4.1.4 or lower.
It has been fixed on Bandicam 4.1.5 and you can find H264(AMD VCE
) instead of H264(AMD APP) on the fixed version.
Please download and install the latest version of Bandicam(4.1.7) and check if you have the same issue with H264(AMD VCE