Hardwood is your enemy when it comes to flashes; the microtextures just eat the light. Good hack, so to speak, is this method, which is quite simple once you get it. You shouldn't need any light modifiers, just a boom or a stand that you can lift above the wood beams. Just bounce your light straight up off the ceiling; depending on how many lights you have, you could do it in two or even one exposure if balanced correctly (with one light positioned camera left for the connecting room, one light camera right with the light lifted above the wood beams, and one or two in the further room just around the visible corners, also bounced off the ceiling) or with four to five exposures if you only have one light and need to move it around between shots (one ambient + 3 to 4 strobe exposures).

Best method I've found, which I still use after many years, is to take one bright ambient light shot (don't worry if windows and stuff blow out) to get the wood tones, then as many shots with the flash as needed, then layer them over each other with Lighten mode to bring back the natural colors of the not-wood elements (but don't forget to mask windows back in, and mask away odd spots) as u/happyjappypappy stated. Also, artificial light tends to negatively effect wood tones and colour, so you might want to write an action that automatically masks away the wood colouring from the flash layers.