My interface usually reports 63ms latency, but I was still out and estimated the total to actually be about 80. So I untick the "Use audio driver reported latency" and put in 80ms. That seems consistent, certainly more consistent than my playing!
Reaper is fantastic VFM, you can install it on up to 5 machines for non-simultaneous use, and the license covers you for all the revisions of one major update.