Razer Blade 14 + TB3 docking station + dual monitor

Hi there,
I tried a Razer Blade 14 (i7 7700HQ + GTX1060) for to use within a dual monitor setup.
First i used a Lenovo ThinkPad Thunderbolt 3 Dock Gen 2 - 2 monitors at same time with 4k/60Hz are working fine.
When using a CalDigit TS3 plus docking station, only 1 monitor at a time is working.
Anyone else here is using a CalDigit TS3 plus and got it to work with dual monitor?
Any help onhow to get this setup working is welcome.

Best regards,

cairon