Some of y'all saw and/or reported problems with the new Mesa Boogie 2 collection when it was first released; at least on some Macs, it used too many CPU cycles to be useful. It was unusable for me as a Logic Pro plugin. Good news: the AT 5.4 release totally fixes this problem. The amps in the Mesa Boogie 2 collection don't use any more CPU cycles than any of the older Boogie amps. Everything sounds great and works just fine on my 2019 iMac.
IK just keeps on working at this program, fixing bugs, adding great amps, making things better for musicians. It's great to see. Thanks, folks!