diff --git a/files/check.lua b/files/check.lua
index e2d66b2..cebca58 100644
--- a/files/check.lua
+++ b/files/check.lua
@@ -46,6 +46,9 @@ function Check:Regular(interval)
 	if self.Counter > 0 then return end
 	self.Counter = interval
 
+	-- Remove some messages, so they will automatically disappear when the problem is solved.
+	Message:CloseAutoclose()
+
 	-- Compare Noita config and actual window resolution.
 	local topLeft, bottomRight = ScreenCap.GetRect() -- Actual window client area.
 	if topLeft and bottomRight then
@@ -107,4 +110,20 @@ function Check:Regular(interval)
 		end
 	end
 
+	-- Check if capture grid size is smaller than the virtual resolution.
+	-- This is not perfect, as it doesn't take rounding and cropping into account, so the actual captured area may be a few pixels smaller.
+	local mode = ModSettingGet("noita-mapcap.capture-mode")
+	local captureGridSize = tonumber(ModSettingGet("noita-mapcap.grid-size"))
+	if mode ~= "live" and (Coords.VirtualResolution.x < captureGridSize or Coords.VirtualResolution.y < captureGridSize) then
+		Message:ShowGeneralSettingsProblem(
+			"The virtual resolution is smaller than the capture grid size.",
+			"This means that you will get black areas in your final stitched image.",
+			" ",
+			"Apply either of the following in the mod settings:",
+			string.format("- Set the grid size to at most %s.", math.min(Coords.VirtualResolution.x, Coords.VirtualResolution.y)),
+			string.format("- Increase the custom resolutions to at least %s in any direction.", captureGridSize),
+			"- Change capture mode to `live`."
+		)
+	end
+
 end
diff --git a/files/message.lua b/files/message.lua
index bb69813..bb5ba7e 100644
--- a/files/message.lua
+++ b/files/message.lua
@@ -17,6 +17,18 @@ local Coords = require("coordinates")
 -- Code --
 ----------
 
+---Removes all messages with the autoclose flag.
+---Use this before you recreate all auto closing messages.
+function Message:CloseAutoclose()
+	self.List = self.List or {}
+
+	for k, message in pairs(self.List) do
+		if message.Autoclose then
+			self.List[k] = nil
+		end
+	end
+end
+
 ---Add a general runtime error message to the message list.
 ---This will always overwrite the last runtime error with the same id.
 ---@param id string
@@ -82,6 +94,7 @@ function Message:ShowSetNoitaSettings(callback, desc)
 		Actions = {
 			{ Name = "Setup and close (May corrupt current save!)", Hint = nil, HintDesc = nil, Callback = callback },
 		},
+		Autoclose = true, -- This message will automatically close.
 	}
 end
 
@@ -98,6 +111,7 @@ function Message:ShowRequestRestart(desc)
 			" ",
 			"To resolve this issue, restart the game.",
 		},
+		Autoclose = true, -- This message will automatically close.
 	}
 end
 
@@ -118,6 +132,7 @@ function Message:ShowWrongResolution(callback, desc)
 		Actions = {
 			{ Name = "Query settings again", Hint = nil, HintDesc = nil, Callback = function() Coords:ReadResolutions() end },
 		},
+		Autoclose = true, -- This message will automatically close.
 	}
 end
 
@@ -139,6 +154,18 @@ function Message:ShowOutputNonEmpty()
 	}
 end
 
+---Tell the user that some settings are not optimal.
+---@param ... string
+function Message:ShowGeneralSettingsProblem(...)
+	self.List = self.List or {}
+
+	self.List["GeneralSettingsProblem"] = {
+		Type = "hint",
+		Lines = { ... },
+		Autoclose = true, -- This message will automatically close.
+	}
+end
+
 ---Tell the user that there is something wrong with the mod installation.
 ---@param ... string
 function Message:ShowGeneralInstallationProblem(...)
diff --git a/files/ui.lua b/files/ui.lua
index c4bae0c..b122493 100644
--- a/files/ui.lua
+++ b/files/ui.lua
@@ -114,9 +114,11 @@ function UI:_DrawMessages(messages)
 		end
 		GuiLayoutEnd(gui)
 
-		local clicked = GuiImageButton(gui, self:_GenID(), 5, 0, "", "mods/noita-mapcap/files/ui-gfx/dismiss-8x8.png")
-		--GuiTooltip(gui, "Dismiss message", "")
-		if clicked then messages[key] = nil end
+		if not message.Autoclose then
+			local clicked = GuiImageButton(gui, self:_GenID(), 5, 0, "", "mods/noita-mapcap/files/ui-gfx/dismiss-8x8.png")
+			--GuiTooltip(gui, "Dismiss message", "")
+			if clicked then messages[key] = nil end
+		end
 
 		GuiLayoutEnd(gui)