Created attachment 38 [details] RBPlus Test project and abs file When using rb+ with zeroplayer enabled I notice slowdown within VJ. If using u235 player instead then the lag doesn't occur. I have had this problem in various rb+ projects and have tested against all main VJ versions going back the past few years. It happens on all the PCs I have tried. If the spec of these PCs is required/useful then please ask. All windows 10. Attached is a test project written in rb+ and the .abs file. The project runs for 5 seconds with the zeropad() enabled then 5 seconds without calling it and repeats. It prints at the top of the screen if the pad is enabled or not. On my machine I can see noticeable slowdown when the pad is enabled. VJ consistently reports 62.5 fps in the info bar at the bottom. On real hardware the problem doesn't occur. Please shout if you need more info or any other test projects creating.