crwdns2936637:0crwdne2936637:0 crwdns2853008:0crwdne2853008:0 crwdns2861143:0crwdne2861143:0

2.2 GHz (Turbo Boost up to 3.4 GHz), 2.5 GHz (Turbo Boost up to 3.7 GHz), or 2.8 GHz (Turbo Boost up to 4.0 GHz) quad-core Intel Core i7 processor with 6 MB shared L3 cache.

crwdns2934591:0776crwdne2934591:0 crwdns2934593:0crwdne2934593:0

crwdns2933897:0crwdne2933897:0

MBP 2015 retina 15” very slow.

I have exactly the same problem with MBP 2015 retina 15” very slow . The cpu fans run load though from time to time. Sometimes after a reinstall or fresh install it works for a few days perfectly but same slowness comes back after a while consistently.

Ssd wasn’t the problem as I used an external bootdrive to boot Macos from also replaced with another ssd. Original & high speed ssd . ( sintech)

I wonder if it has to do with the graphics card as every times it runs well for few days and I install imovie , adobe IA or mpeg driver for vlc it started to be slower. Could it be the graphics card?

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2853045:0crwdne2853045:0 crwdns2853046:0crwdne2853046:0
crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0

crwdns2933313:01crwdne2933313:0

crwdns2934221:0crwdne2934221:0
crwdns2931211:0crwdne2931211:0 crwdns2931215:0crwdne2931215:0 crwdns2934225:0crwdne2934225:0

crwdns2933897:0crwdne2933897:0

I would run the onboard diagnostics to see what errors where popping. Restart your system and the press the D key to enter. Let us know what you set for errors.

Referece Mac startup key combinations

crwdns2934105:0crwdne2934105:0

crwdns2853045:0crwdne2853045:0 crwdns2853046:0crwdne2853046:0
crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0

crwdns2934229:0crwdne2934229:0

Xavier Flow crwdns2934231:0crwdne2934231:0
crwdns2936625:0crwdne2936625:0:

crwdns2936751:024crwdne2936751:0 0

crwdns2936753:07crwdne2936753:0 1

crwdns2936753:030crwdne2936753:0 9

crwdns2942667:0crwdne2942667:0 66