Hi Anton, my problem was actually several things I was doing wrong:
I was configuring the devices to report to GMT-5
I had configured the database with GMT-5 time zone
I had configured Traccar with GMT-5 time zone
I was replacing fixtime with servertime
Finally I left everything as the original Traccar comes, I configured all the devices to GMT0, I removed the time zone from the database, I only left GMT-5 on the Traccar server, that solved all my problems with GT06, now the report maps route do not have irregular lines (location jumps) and in those reports the GMT-5 time is reported without problem
What was the problem and the solution? It would be good to share for other people having similar issues.