I was pleasantly surprised by Mega's customer support. I had a problem with MEGASync putting high CPU load on my PC. Although I am a computer professional, I couldn't solve it myself. As a last resort, I asked the support for help. Usually, the support of similar companies is rubbish. Try to get any support from Google, for instance. However, MEGA's support pleasantly surprised me. With their help I was able to figure out which files cause the issue and resolve it.