Well, I really don't speak spanish.... but I understand that you've got ESXi 6.5 with Ubuntu VM and there is some performance probem and problems with VMware Tools.
VMware Tools is the easy one - install openvmtools:
sudo apt update
sudo apt install open-vm-tools
sudo apt install open-vm-tools-desktop # if you've got GUI
Regarding the performance problem we need more information. First I'd run ESXTOP and check CPU Ready%, Co-Stop and storage latency (DAVG, KAVG, GAVG)