Combat log only recording the first bit of a Fight

I’m having issues with combat logging and I think it revolves around using a pull timer but I haven’t been able to identify if it is the problem. Most recently we did 10 Nax and EoE. Of all encounters only Gluth and 4h registered fully, all other encounters last between 6-15 seconds at most. I’m pouring over the text file and it sure enough seems like it just stopped recording. Any suggestions or has anyone else ran into this before? I’ve gone ahead and disabled the auto log on boss fights and I don’t know if there’s anything to just disable the start log on prepull timer.

Yeah, just sounds like you have multiple addons autologging that toggle the combat log off. This could be DBM, BigWigs, Autologger etc.