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Cura 3.5 Performance

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Cura 3.5 has some great features that I am pretty excited about (being able to have separate speed on the overhangs is worth an upgrade by itself). However, there has been a terrible performance regression on 3.5. It is so bad I am having to downgrade to 3.4.1. The settings area takes several seconds to scroll and trying to zoom or move the model area is pretty much impossible as it takes many seconds for any movement to happen. 


I do have an older machine (2007 iMac 2.8 Ghz dual core) but Cura 3.4.1 and prior was perfectly usable.


Does anyone else have this issue?

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