Slowness GIMP 2.10 x WINDOWS 10 64bits

[Maria]

I've used GIMP 2.8 until 5/25/2018. I upgraded to GIMP 2.10 to try to get agile in performing simple tasks like opening images, exporting, curing selection ... But the slowness persists. Until 5/23/2018 to open an image in GIMP, export, sign image, all this was instantaneous. But, now there is a nuisance of "lag" of several seconds for each task, both in GIMP 2.8, as it continues to occur with the new version 2.10 ...