diff --git a/include/QF/Vulkan/render.h b/include/QF/Vulkan/render.h
index 080ae4e76..ed0c0e6ab 100644
--- a/include/QF/Vulkan/render.h
+++ b/include/QF/Vulkan/render.h
@@ -419,8 +419,9 @@ typedef struct qfv_renderctx_s {
 	exprtab_t   task_functions;
 	qfv_jobinfo_t *jobinfo;
 	qfv_samplerinfo_t *samplerinfo;
-	qfv_job_t *job;
+	qfv_job_t  *job;
 	qfv_renderframeset_t frames;
+	int64_t     size_time;
 } qfv_renderctx_t;
 
 typedef struct qfv_taskctx_s {
diff --git a/libs/video/renderer/vulkan/render.c b/libs/video/renderer/vulkan/render.c
index a8ede28d9..fceb30807 100644
--- a/libs/video/renderer/vulkan/render.c
+++ b/libs/video/renderer/vulkan/render.c
@@ -420,8 +420,9 @@ update_framebuffer (const exprval_t **params, exprval_t *result,
 
 	qfv_output_t output = {};
 	Vulkan_ConfigOutput (ctx, &output);
-	if (output.extent.width != render->output.extent.width
-		|| output.extent.height != render->output.extent.height) {
+	if ((output.extent.width != render->output.extent.width
+		|| output.extent.height != render->output.extent.height)
+		&& (Sys_LongTime () - ctx->render_context->size_time) > 2*1000*1000) {
 		QFV_DestroyFramebuffer (ctx, rp);
 		update_viewport_scissor (render, &output);
 		render->output.extent = output.extent;
@@ -455,6 +456,7 @@ QFV_Render_Init (vulkan_ctx_t *ctx)
 {
 	qfv_renderctx_t *rctx = calloc (1, sizeof (*rctx));
 	ctx->render_context = rctx;
+	rctx->size_time = -1000*1000*1000;
 
 	exprctx_t   ectx = { .hashctx = &rctx->hashctx };
 	exprsym_t   syms[] = { {} };
diff --git a/libs/video/renderer/vulkan/vulkan_output.c b/libs/video/renderer/vulkan/vulkan_output.c
index 62d6ee231..668100944 100644
--- a/libs/video/renderer/vulkan/vulkan_output.c
+++ b/libs/video/renderer/vulkan/vulkan_output.c
@@ -122,6 +122,7 @@ acquire_output (const exprval_t **params, exprval_t *result, exprctx_t *ectx)
 				pl->scissor.extent = sc->extent;
 			}
 		}
+		rctx->size_time = Sys_LongTime ();
 	}
 	ctx->swapImageIndex = imageIndex;
 	rp->beginInfo.framebuffer = octx->framebuffers[imageIndex];