I have such problem but get no answer , I updated my old post but it was deleted as "abusive" (do not know why moderator deleted my problem )
So :
i have strong PC, Nvidia 780 GTX, Windows 7 64, a lot of memory etc.
i have X5 , i tested X7
it freezes PC when i use "marquee visible" on thin lines objects/layers
i work on making textures for models - as someone knows 3d modelling - model has mesh, this mesh has "UV mapping"
so normal job to paint textures for models - when you use UV map mesh
but Corel freezes PC when i use "marquee visible" , it simply freezes PC (do not tell me to update drivers - i know such things - i have all up to date)
I have no such issues and never had even with Windows 7 and X7 but this interests me. Could you load the image somewhere so I could test it? Unfortunately I dumped windows 7 a very long time ago and now run 2018 so it's not going to help you much but it could help the program.
https://postimg.cc/image/6zbu59hrv/
there is link to postimage screenshot from my PC
as you there is texture of model - in this case Polish army camouflage pattern for soldier
and as you see - there is a mesh of 3d model (mesh of legs, arms, bulletproof vest, boots and some details of soldier model)
this mesh is working okay untill i use marqee , when i use marquee than it causes PC freez and I have to reboot PC using button
fixed ... but... i had do purchase new 2018 version, a lot of money (here in central/eastern Europe) but it works
even X7 trial had problems with this, but on 2018 version it works without problems and big many-many layers images do not cause ctd
and mesh doesn't cause PC to freeze