Does Ultrastream work with ASIO? I noticed on the CA forum that one poster had to set the 4.36 driver for ASIO first and then set the player to KS (albeit a different player) to get it to work with Ultrastream.
Is the problem occurring when using Bug head? Have you tried JPLAYmini with Ultrastream? If not, and you subsequently find that it works with Ultrastream and KS, that might point to the combination of Bug head and the new driver as the cause of the problem.
If JPLAYmini also does not work with Ultrastream, rather than driver incompatibility, perhaps a glitch occurred during the driver installation?
In that case, something else to try (if you haven't already): reinstall the driver in GUI mode after uninstalling Fidelizer Pro, fully resetting AO and shutting down Process Lasso. Then test your configuration stepwise. Try music playback with hibernate off and before reinstalling Fidelizer Pro, optimizing with AO, running PL or switching to core mode. If that works, install Fidelizer Pro and test playback. If that works optimize with AO and try playback. If that works switch to core mode and try playback again. If that works go to hibernate mode and test again. Finally, if all is still good, try with Process Lasso running.
Hope something here helps.
Control and Audio PCs
Dell Inspiron 15R SE laptops with Intel Core i7-3612QM (2.1 GHz) and 16 (Control-PC) or 8 (Audio-PC) Gb DDR3 1600 MHz RAM
OS: Windows Server 2016 optimized (via Fidelizer 7.4 (free), Fidelizer Pro 8.0, Audiophile Optimizer 2.20 beta 6, Computer Audio Design scripts) to Virtual Core Mode on Control-PC and Audio-PC (http://jplay.eu/foru...ws-server-2016/ page 9, post #162); Additional Optimization: Process Lasso Server Edition 18.104.22.1686; File Manager: Q-Dir 6.86; Library Manager: JRiver MC19; Renderer: JPLAY 6.2 with ULTRAstream engine in JPLAYStreamer mode; Server: Minimserver 0.8.5.2; Control Point: Kinsky 4.4.5 / Upplay 1.2.8
Control-PC > SUPRA Cat 8 Ethernet Cable > Audio-PC > Chord Silver Plus USB Cable > Uptone Audio Regen (Amber) > Curious Cable USB Regen Link > Luxman DA-06 > Chord Chameleon Plus XLR Interconnects > Luxman L-505u > Van Den Hul Teatrack Speaker Cables > Bryston Model T Signature Speakers with external crossovers
Seagate 3-Tb ext HDD (USB to Control PC) plus two 3-Tb Seagate backups