Efficiency improvements after switching to 17.1 from 17.0

Try "unset ACL_PCIE_USE_JTAG_PROGRAMMING" instead of "ACL_PCIE_USE_JTAG_PROGRAMMING=0". Also check your bashrc to make sure ACL_PCIE_USE_JTAG_PROGRAMMING is not being overridden.

Note that when you switch from one version of Quartus to another and change your BSP alongside with it, the first time you try to run a kernel compiled by the new version, the programming will be done via JTAG since the static region of the new BSP is different from the previous one and hence, the static region will need to be updated. However, this should only happen once and every configuration after that should go through PCI-E.