LR lagging and glitchig Please help!!!

Question

my LR is driving me crazy. When I use tools/sliders the image dosend reflect the chances right away, it takes about 1.5 - 2 seconds. And exporting is extreamly slow. I watch task manager and it avg about 35% CPU usage while working and will spike to 85-100 for a quick sec. here and there. The spot removal tool will park Lightroom for a 10 Count!! also I get a red glitch every once and a while like a flicker of the screen. Can Any one ahead some light in these issues ?

Thanks

MY RIG

Dell XPS 15.6" 4K Touchscreen Laptop

windows 10

prosessor 2.60 i7 6700HQ

16 GB ram

1TB (@50% full)

LR info

LR CC 2015.7 [1098788

built in memory 16239.6

real mem. 16239.6

real mem. Used 5028.2

mem cache size 3366.8

graphix processor GeForce GTX 960M

dj_paige · Answer

If you are doing lots of brushing and/or spot removal on a photo, this slowdown is a known drawback in Lightroom.

Some things you can try

Turn off the graphics acceleration (Preferences->Performance tab->UNcheck "Use Graphics Processor")
do the brushing and/or spot removal as the next to last editing step, and as the last step, turn on Lens Corrections and Transforms if desired
do the brushing and/or spot removal in Photoshop or Photoshop Elements
get a faster CPU

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